A plug-and-play solar-powered battery back-up resolution for the house – pv journal India

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The OneBox from the Indian manufacturer Vision Mechatronics consists of a lithium battery, a hybrid inverter and a solar charge controller to provide a problem-free solution for emergency power supply in the event of a power failure. Solar roof owners are offered a grid feed function to maximize the net metering income from excess electricity.

March 2nd 2020

Diesel generators are the most common means of electricity Backup in the event of power failures, but not only loud and harmful to the environment, but also the most expensive means of alternative electricity. Such devices have an operation Efficiency of only 25% require frequent maintenance, with diesel storage requirements and fears of diesel theft.

Vision Mechatronics from Maharashtra has installed a grid-interactive energy storage system based on lithium batteries in connection with a solar system on the roof in South Delhi.

The emergency power supply system integrated in the building – called OneBox – takes over the power load of an elevator. five air conditioners; two ovens; Water pumps; slow loading Points for electric vehicles; Community lighting; and lights, fans, and sockets for a full floor of the building in which it was installed.

The system offers a Hhigh peak discharge current Which enables it to cope with loads such as the elevator and air conditioning systems that require high starting currents a comparatively small one Lithium battery capacity. The system also supports single phase failures and has a claimed seven millisecond response time which ensures uninterrupted power supply and zero blackout.


“OneBox is a do-it-yourself hybrid solar solutions of the world’s smartest lithium bAtterie, hybrid inverter and solar charge controller for a problem-free plug-and-play solution for backup [power], Rashi Gupta, director of Vision Mechatronics, said pv magazine.It ensures an uninterruptible, flicker-free power supply [a] Response time of seven milliseconds, which means that all electronic devices remain unaffected by the power supply [cuts] and fluctuations. “

The inverters and batteries appear– –configured in the OneBox according to customer requirementss, according to the manufacturer. “Users don’t have to worry about the compatibility of the inverter and lithium batteries or the complex cabling [during] Installation, ”added Gupta. “The integration of solar modules in OneBox not only helps to reduce the CO2 footprint, but also makes the system cost-effective and inexpensive improves power availability. Users with excess renewable energy generation can save money with Net Metering by using [the] OneBox grid feed function.

In terms of battery life, the product depicted in this article has a life of 4,000 cycles at 80% depth of discharge.

Predictive monitoring ensures minimal downtime

Vision Mechatronics, a robotics, industrial automation, and renewable energy technology company, claims that its lithium battery has active balancing and IoT capabilities, as well as predictive and preventative monitoring, all of which help extend battery life. The predictive monitoring function monitors data at the cell level, usually via email 15 days in advance to signal when the battery or system needs attention. T.The auto on / off feature, the developer said, detects the smart battery’s email details about the cause of the failure and allows customers to take corrective action.

OneBox according to Gupta, is inexpensive, environmentally friendly Replacement for diesel generators with a claimed return on investment of around 20.5 months to three years and operating costs that reach grid parity.

The Bureau of Indian Standards recently published safety and performance requirements for grid-interactive energy storage systems and for battery management systems – an important step towards standardizing new technologies such as lithium batteries.

“India is the first country in the world to publish a battery management system [BMS] Standard and the BMS used in the OneBox are in accordance with Indian standards, ”said Gupta.

This article was modified on 03/03/2020 to clarify that the OneBox’s claimed response time is seven milliseconds rather than seven microseconds as previously stated.

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